Take this line out of your template and see if it works:
HTML Code:
<iframe name="dkp_frame" width=100% height=1700px SCROLLING=no FRAMEBORDER=0 src="/25manwrathplus">dkp_frame</iframe>
You may have to register the $show variable also - I can't remember if that one is required, but you might try it. (And please use the code tags for code, not quote tags.)
As for error_logs, I have no idea where they are in cPanel, I just know I get mine from a logs folder where the access_logs are also kept.